Kernrechtsfrage
Whether the appeal against the Zurich Obergericht decision was admissible without exhausting the cantonal cassation remedy
Extrahierter Entscheid
The appeal against the Obergericht decision was inadmissible because the cantonal cassation complaint allowed all Federal Supreme Court grounds that could be raised here.
Extrahierte Begründung
Because in marital protection matters only constitutional rights can be invoked, and the Zurich cassation complaint covered procedural violations, arbitrary factual findings, and violation of clear substantive law, the cantonal remedy had to be exhausted first.